tree 3653f48740d7812e21e15d09648e58edbc0416b9
parent 54ea06f6afe85aaf419e51343d4e4b5599197113
author Russell King <[EMAIL PROTECTED]> Sat, 16 Jul 2005 16:43:33 +0100
committer Russell King <[EMAIL PROTECTED]> Sat, 16 Jul 2005 16:43:33 +0100
[PATCH] ARM: Allow register_undef_hook to be called with IRQs off
Preserve the interrupt status across a call to register_undef_hook.
This allows it to be called while interrupts are disabled.
Signed-off-by: Russell King <[EMAIL PROTECTED]>
arch/arm/kernel/traps.c | 12 ++++++++----
1 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -248,16 +248,20 @@ static DEFINE_SPINLOCK(undef_lock);
void register_undef_hook(struct undef_hook *hook)
{
- spin_lock_irq(&undef_lock);
+ unsigned long flags;
+
+ spin_lock_irqsave(&undef_lock, flags);
list_add(&hook->node, &undef_hook);
- spin_unlock_irq(&undef_lock);
+ spin_unlock_irqrestore(&undef_lock, flags);
}
void unregister_undef_hook(struct undef_hook *hook)
{
- spin_lock_irq(&undef_lock);
+ unsigned long flags;
+
+ spin_lock_irqsave(&undef_lock, flags);
list_del(&hook->node);
- spin_unlock_irq(&undef_lock);
+ spin_unlock_irqrestore(&undef_lock, flags);
}
asmlinkage void do_undefinstr(struct pt_regs *regs)
-
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